真(zhen)(zhen)(zhen)空(kong)充(chong)氣(qi)包裝(zhuang)(zhuang)的(de)主要作用(yong)(yong)(yong)除(chu)真(zhen)(zhen)(zhen)空(kong)包裝(zhuang)(zhuang)所(suo)具備的(de)除(chu)氧(yang)保質功能外(wai),主要還有抗壓、阻(zu)氣(qi)、保鮮等作用(yong)(yong)(yong),能更有效地(di)使食(shi)(shi)(shi)(shi)品(pin)(pin)(pin)(pin)長期保持原(yuan)有的(de)色、香、味、形及營養價值。另外(wai),有許多食(shi)(shi)(shi)(shi)品(pin)(pin)(pin)(pin)不適(shi)宜采用(yong)(yong)(yong)真(zhen)(zhen)(zhen)空(kong)包裝(zhuang)(zhuang)而(er)必須采用(yong)(yong)(yong)真(zhen)(zhen)(zhen)空(kong)包裝(zhuang)(zhuang)機真(zhen)(zhen)(zhen)空(kong)充(chong)氣(qi)包裝(zhuang)(zhuang)。如松(song)脆易碎(sui)食(shi)(shi)(shi)(shi)品(pin)(pin)(pin)(pin),易結(jie)塊食(shi)(shi)(shi)(shi)品(pin)(pin)(pin)(pin),易變(bian)形走油食(shi)(shi)(shi)(shi)品(pin)(pin)(pin)(pin),有尖銳(rui)棱角或(huo)硬度較高會(hui)刺破包裝(zhuang)(zhuang)袋(dai)的(de)食(shi)(shi)(shi)(shi)品(pin)(pin)(pin)(pin)等。食(shi)(shi)(shi)(shi)品(pin)(pin)(pin)(pin)經真(zhen)(zhen)(zhen)空(kong)充(chong)氣(qi)包裝(zhuang)(zhuang)后(hou),包裝(zhuang)(zhuang)袋(dai)內充(chong)氣(qi)壓強大(da)于包裝(zhuang)(zhuang)袋(dai)外(wai)大(da)氣(qi)壓強,能有效地(di)防止食(shi)(shi)(shi)(shi)品(pin)(pin)(pin)(pin)受壓破碎(sui)變(bian)形并不影(ying)響包裝(zhuang)(zhuang)袋(dai)外(wai)觀及印刷裝(zhuang)(zhuang)潢(huang)。
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